山西霍山辽东栎群落乔木层研究——种间关系及年龄结构

The Study on the Tree Layer of Quercus liaotungensis Community in MT. Huoshan of Shanxi Province——interspecific relationship and population age structure

为了探明山西霍山辽东栎(Quercus liaotungensis)种群的年龄组成及其与其他乔木的种间关系,通过空间代时间、横向导纵向的方法对辽东栎群落进行样地调查,发现辽东栎种群属于增长型种群。种群存活曲线接近DeeveyⅡ型,死亡率比较恒定,种群存在巨大潜在的更新能力。此外,选取该地区辽东栎植物群落的乔木树种,采用2×2列联表的X2检验和Ochiai指数、Dice指数、Jaccard指数方法分析了种间关系,发现群落中辽东栎与其他的植物种全部呈现较强的负关联,说明辽东栎与其他植物之间的种间竞争比较激烈,群落正处于演替阶段中。

To unravel the age structure and the relationship with other arbors of Quercus liaotungensis population in Mountain Huoshan of Shanxi, the space - time substitution method for sample - plot survey was employed in the present investigation. It was revealed that the Quercus liaotungensis population belongs to the growth type. The population surviv- al curve was simlilar to Deevey II, mortality rate was considerably stable, thus the population showed the high potential in renewal. In addition, the tree species in Quercus liaotungensis community of Mt. Huoshan were investigated by the X2 test of 2 × 2 contingency table, Ochiai index, Dice index and Jaccard index method, and the significantly negative corre- lations were obtained when compared with other plants within the community. The result indicated that the Quercus liao- tungensis population demonstrated the severe competition with other species, and the community is in the successional stages.